# SDR AALA202111221756

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2021
- Submitted: November 22, 2021
- Operation: Air carrier
- Aircraft: [N551UW](https://openairdocs.org/aircraft/N551UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4940
- Aircraft time: 32,856 hours, 12,398 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Part number: 065500010200
- Part serial: 03072
- Condition: Defective
- Location: Flap System
- Part time: 20,258 hours, 8,070 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202111221756

## Discrepancy

AIRCRAFT WAS GROUNDED: FLAP SELECTOR GETS STUCK BETWEEN FLAPS 1 AND FLAPS 2. REPLACED FLAP / SLAT CONTROL LEVER PER AMM 27-51-43 (AALA202111224917) AND COMMAND SENSOR UNIT PER AMM 27-51-17 (AALA202111221756). A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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